Indicating and totalizing mechanism.



E. S. D'ONISTHORPE.

INDIGATING AND TOTALIZING MECHANISM.

APPLICATION FILED JULY 29, 1909.

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EDMUND SEAL DONISTHORPE, OF LONDON, ENGLAND.

INDICATING- AND TOTALIZING MECHANISM.

Specification of Letters Patent. PatentediMar. 29, 1910.

Application filed July 29, 1909. Serial No. 510,289.

This invention relates to improvements in means for indicating the amount of liquid in a vessel and 'also registering the total amount of liquid poured 1nto the vessel, and

-is especially adapted for indicating the amount of the petrol in the petrol tank of an automobile, and at the same time registering the total amount of petrol which is poured into the tank, which petrol may be poured in at diflerent times.

' drum 6,

The drawings illustrate apparatus made in accordance with my invention.

Figure 1 is a side elevation partly in section and Fig. 2 a plan showing the casing in section. Fig. 3 illustrates a modification.

a is a float in the petrol tank or in a subsidiary vessel in connection with the petrol tank and is connected by a chain 6 to a a spring d constantly tends to turn the drum so as to wind the chain on it when the float rises. On the shaft 6 of the drum 0 is a pointer f which indicates the height of petrol. When petrol is cured into the tank the float-a rises and the drum 0 also revolves and by means of a pawl 9 turns the toothed wheel h, free to turn on a sleeve on the shaft 6. The wheel h is geared by the wheels 71 and j to the wheel 70, so that when the wheel it turns the wheel 70 also turns. On the shaft Z of the wheel is is a pointer which registers the amount of petrol poured into the tank. The wheel is is provided with a spring pawl m which prevents backward revolution of the wheel 70.-

In Fi 3 the chain 6 is attached to the under si e of the-float a and a cup sha ed extension n is provided to contain the oat when the tank 1s empty. The petrol enters through perforations 0 at the bottom of the tank near the top of the cup.

What I claim is 1. The combination the tank, a drum, float and drum, the drum in one means for connectingthe a spring tending to turn dlrection, a omter, means for, connecting the pointer with the drum, a ratchet wheel, means carried by the drum wheel is operated in whereby said ratchet of a tank, a float-in one direction only, a second pointer, gearin connecting said second 'polnter with sai ratchet wheel, and means for preventing said second pointer from moving in one direction.

2. The combination of .a tank, a floattherein, means connecting the float and drum, a spring for moving the drum in one direction, a pointer, means connecting the pointer with said drum to cause it to move therewith in both directions to indicate the position of the float in the tank, a second pointer to indicate the total amount ofliquio' poured into the tank, and means connecting said second pointer with the drum whereby said second pointer is moved in one direction only by the drum.

3. An apparatus for amount of liquid in a vessel and for regisindicating the,

tering the total amount of liquid poured into it, comprising a tank for the liquid, a float therein, a drum, a flexible connection between the float and drum, a spring for rotating the drum as the float rises, a pointer, means connecting the pointer with the drum to cause it to move therewith when said drum rotates in either direction, a.

second pointer for indicating the amount of liquid poured into the vessel, means for reventing this pointer from moving in one direction, ratchet mechanism, means carried by the drum for operating this ratchet mechanism in one direction onl and means connecting said ratchet mechanism with the second pointer.

4. The combination of a tank, a float in the tank, a drum, a flexible connection between the drum and the float,"a spring for moving the drum in one direction as the float rises, a pointer, means connecting the pointer with the drum to cause said pointer to indicate the position of the float in the tank, a second ointer for indicating the total amount of liquid poured into the vessel, means for preventing this second pointer from moving in one direction, a ratchet wheel, means connecting said ratchet wheel with said second pointer, and a pawl car ried by the drum. and engaging saldratchet wheel for moving it when the drum is moved by the spring as the float EDMUND SEAL DORISTHORPI 

